Adobe is making fun of me: 10 minutes wait and closed without any help
Since I've updated Bridge, full screen video don't fit the screen.
Before the update, it was fine. After, the size of the video is about 25% of the screen. Smaller than the no full screen preview in fact.
Generate Monitor-size previews is checked. Purging cache doesn't help.
And now, this is how Adobe has helped me: 10 minutes or more before being contacted by an agent, ten minutes waiting after being contacted, and... nothing:

All in all, I've already lost about one hour of my life for nothing.
